The formula for a circumference is:
C = πd or C = π2r
So we already have the circumference which is 276 yd
276 = πd
We just need to find the diameter, so we divide d/1 on both sides:
d/276 = π
Now we divide 276/1 on both sides:
d = 276/π
Now we solve
d = 87.90
